1. The signal generator is small in size, has many functions, easy to operate and easy to carry.2. The key layout is reasonable, all functions have independent corresponding keys, easy to operate.3. Built-in battery, low power consumption, long standby time.Specifications:Main Color: GreenMain Material: ABSCount: 1999 CountsScreen: Digital LCD ScreenVoltage: 200mV-1000VAC Voltage: 2V-750VCurrent: 20A-20AAC Current: 2mA-20AResistance: 200-20MCapacitance: 20nF-200FDiode: YesContinuity: YesBuzzer: YesData Retention: YesAuto Shutdown: YesOverload Protection: YesFuse Protection: F 200mA/250VLow Voltage Indication: YesPower Supply: 9V 6F22 BatteryItem Size: 207 * 98 * 40mm / 8.15 * 3.86 * 1.57inItem Weight: 500g / 1.10lbsPackage Size: 22 * 14.5 * 4.5cm / 8.66 * 5.71 * 1.77inPackage Weight: 550g / 1.21lbsPackage List:1 * Smart Digital Multimeter2 * Measuring Pen